Have you ever been happy to be by yourself? Has there been another time when you were by yourself, but wishing for the company of others? In both of these situations, you were alone. But you were only lonely in one of them. Alone and lonely are two adjectives with related, but different, meanings. They are similar enough to confuse many writers, but using them carefully will enhance your writing and make describing some emotional states easier.
Lonely as adjective
Alone as adjective:
Alone means having no one else present; on one's own.
She was alone that evening.
Kerry was alone at the bar.
Lonely or alone:
Lone is another adjective with the same meaning as alone. It is a shortening of the word alone, but it has a different place in the English sentence. Lone comes before the noun while alone comes after the noun. Lonely is an adjective. It describes a feeling of sadness stemming from isolation or abandonment. Alone is also an adjective. It describes a single person or object, separate from others. One who is alone is by oneself. Alone and lonely are both adjectives, but they have different meanings. A person is alone when he is by himself. A person is lonely when he feels abandoned or sad due to isolation. Since alone and solitary both contain the letter A, you can remember that alone refers to a state of solitude, rather than an emotion.